EP1956267A2 - Zahnkette, insbesondere für Förderbänder - Google Patents

Zahnkette, insbesondere für Förderbänder Download PDF

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Publication number
EP1956267A2
EP1956267A2 EP08000211A EP08000211A EP1956267A2 EP 1956267 A2 EP1956267 A2 EP 1956267A2 EP 08000211 A EP08000211 A EP 08000211A EP 08000211 A EP08000211 A EP 08000211A EP 1956267 A2 EP1956267 A2 EP 1956267A2
Authority
EP
European Patent Office
Prior art keywords
pin
end plate
silent chain
plates
link
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08000211A
Other languages
English (en)
French (fr)
Other versions
EP1956267A3 (de
Inventor
Paolo Teso
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fond Metalli Conveyors Srl
Original Assignee
Fond Metalli Conveyors Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fond Metalli Conveyors Srl filed Critical Fond Metalli Conveyors Srl
Publication of EP1956267A2 publication Critical patent/EP1956267A2/de
Publication of EP1956267A3 publication Critical patent/EP1956267A3/de
Withdrawn legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/30Details; Auxiliary devices
    • B65G17/38Chains or like traction elements; Connections between traction elements and load-carriers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/06Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms
    • B65G17/08Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface having a load-carrying surface formed by a series of interconnected, e.g. longitudinal, links, plates, or platforms the surface being formed by the traction element
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G17/00Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface
    • B65G17/30Details; Auxiliary devices
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16GBELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00Chains
    • F16G13/02Driving-chains
    • F16G13/04Toothed chains
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16GBELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00Chains
    • F16G13/02Driving-chains
    • F16G13/08Driving-chains with links closely interposed on the joint pins
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16GBELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G13/00Chains
    • F16G13/18Chains having special overall characteristics
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2207/00Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors
    • B65G2207/12Chain pin retainers

Definitions

  • the present invention refers to a silent chain particularly for conveyors.
  • a silent chain for conveyors of the conventional type is made up of a plurality of links.
  • Each link comprises two pins, parallel to each other, connected by a plurality of plates.
  • the plates belonging to one link are intercalated with the plates belonging to the adjacent links.
  • the plates carried by each pin are held in place by riveting the two ends of the pin on the end plates.
  • Figures 1 and 2 show two types of plates of a conventional silent chain, denoted with the reference numeral 100.
  • the plates 100 of Figures 1 and 2 have a substantially trapezoid shape, wherein the corners 101 of the longer base of the trapezium are rounded.
  • Two elliptical holes 102 adapted to receive respective pins with an elliptical section are formed in each plate 100.
  • the plate 100 of Figure 1 is solid and serves as a guide.
  • the plate 100 of Figure 2 has a cut-out 104 in the centre, which forms two lobes 105 adapted to engage with the teeth of a drive wheel (not shown) of the silent chain.
  • the riveted ends of the pins have a very small riveting thickness. Furthermore, the end plates have a pouch-type housing seat in which the riveted part of the pin is housed, so as not to protrude outward from the end plate.
  • said riveted part of the pin having a very small thickness, is extremely fragile. Therefore, during the operation and the fatigue stress of the chain, the riveted part of the pin tends to wear down, because of the continuous hammering of its pouch-type housing seat. This wear causes the riveted part of the pin to break, compromising the life of the chain. In fact the chain comes off because the end plate is no longer retained by the pin.
  • Object of the present invention is to overcome the above mentioned limits and/or drawbacks presented by the silent chains of the prior art, by producing a silent chain that is reliable and that ensures a long average life.
  • Another object of the present invention is to provide such a silent chain that is cheap and simple to produce and to mount.
  • the silent chain particularly for conveyors, according to the invention comprises a plurality of links connected to one another.
  • Each link comprises two pins connected to each other by a plurality of plates between which are intercalated link plates connected to a pin of one link and to a pin of the adjacent link.
  • Two end plates are disposed at the ends of each link.
  • Each end plate is provided with two holes for the passage of said pins.
  • the end plate further comprises a countersunk seat formed around each hole.
  • the pin has a tapered end, which is housed in the countersunk seat of the end plate, so that the tapered end of the pin does not protrude outwards from the end plate.
  • the silent chain according to the invention offers a greater reliability and strength than the silent chains and the conveyors of the prior art.
  • FIG 3 shows a length of silent chain comprising two chain links 1A and 1B.
  • Each chain-link 1A and 1B comprises two pins 2 connected to each other by plates 100, per se known, like those illustrated in Figures 1 and 2 .
  • Between the plates 100 of each link 1A and 1B are intercalated link plates 100' which connect a shaft 2 of the first link 1A with a shaft 2 of the second link at 1B.
  • Each link 1A and 1B has respective end plates 3 in which the ends of the pins 2 are blocked.
  • a first embodiment of an end plate 3 according to the invention is described with reference to figures 4, 5 and 6 .
  • the end plate 3 has essentially the same shape as the plate 100 of Figure 1 . That is, the end plate 3 has a trapezoid shape with the corners 31 of the greater base rounded.
  • the difference with respect to the plates of the prior art is represented by the fact that the end plate 3 has two holes 32 surrounded by a countersunk circular seat 33 and has double the thickness of the plates 100.
  • a round hole 32 has been illustrated.
  • the hole 32 can have another shape as will be described hereunder.
  • the plate 3 has a thickness s of about 3.00 mm, in which half the thickness of the plate is occupied by the hole 32 and the other half of the thickness of the plate is occupied by the countersunk seat 33.
  • the round hole 33 has a diameter ⁇ 1 of about 4.75 mm.
  • the countersunk seat 33 has a maximum diameter ⁇ 2 of about 6.00 mm and a countersink angle between 50° and 70°, preferably 60°.
  • Figure 7 shows diagrammatically the end portion of the pin 2 belonging to a silent chain produced according to the invention.
  • the pin 2 has an elliptical cross-section. In this manner, the pin 2 can couple inside the elliptical holes in the intermediate links 100, 100'.
  • the pin 2 differs from the conventional pins in that it has a circular tapered or truncated conical portion 20 at each end, adapted to be accommodated in the countersunk seat 33 of the end plate 3.
  • the pin 2 is inserted in the holes 102 of the intermediate plates 100 and 100' and the tapered end 20 of the pin is housed in the countersunk seat 33 of the end plate 3.
  • the tapered circular portion 20 of the pin 2 can be obtained by riveting or can be applied to the pin 2 by welding.
  • the thickness of the tapered end 20 of the pin is equal to s /2, that is, to half the thickness of the end plate 3, and the angle of inclination of the tapered portion 20 of the pin is equal to the countersink angle ⁇ of the countersunk seat 33.
  • the end 20 of the pin 2 does not protrude from the end plate 3 and at the same time the contact surface between the tapered end 20 of the pin and the countersunk seat 33 of the end plate 1 is maximised.
  • the resistance to wear of the end part 20 of the pin 3 is also improved.
  • Figure 9 shows a variant of the end plate 3 according to the first embodiment of the invention.
  • a cut-out 34 is provided in the end plate 3 so as to form two lobes 35 adapted to engage with the teeth of a drive wheel of the conveyor.
  • Figures 10 and 11 show a second embodiment of the end plate 3, in which rectangular holes 32', again surrounded by countersunk circular seats 33, are provided.
  • Figure 12 shows a variant of the end plate 3 according to the second embodiment, in which a cut-out 34 is provided so as to form two lobes 35 adapted to engage with the teeth of a drive wheel of the conveyor.
  • Figures 13 and 14 show a third embodiment of the end plate 3, in which hexagonal holes 32", again surrounded by countersunk circular seats 33, are provided.
  • Figure 15 shows a variant of the end plate 3 according to the third embodiment, in which a cut-out 34 is provided so as to form two lobes 35 adapted to engage with the teeth of a drive wheel of the conveyor.
  • the circular 32, rectangular 32' and hexagonal holes 32" provided in the end plates 3 have a greater diameter or width than the maximum diameter of the pin 2, so that the pin 2 can be inserted into said holes 32, 32' and 32" and thus the end 20 of the pin 2 can be riveted in the circular countersunk seat 33.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chain Conveyers (AREA)
  • Gears, Cams (AREA)
EP08000211A 2007-02-12 2008-01-08 Zahnkette, insbesondere für Förderbänder Withdrawn EP1956267A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20070251 ITMI20070251A1 (it) 2007-02-12 2007-02-12 Catena a denti in particolare per trasportatori

Publications (2)

Publication Number Publication Date
EP1956267A2 true EP1956267A2 (de) 2008-08-13
EP1956267A3 EP1956267A3 (de) 2009-10-14

Family

ID=39324182

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08000211A Withdrawn EP1956267A3 (de) 2007-02-12 2008-01-08 Zahnkette, insbesondere für Förderbänder

Country Status (3)

Country Link
EP (1) EP1956267A3 (de)
IT (1) ITMI20070251A1 (de)
RU (1) RU2008105070A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008044945A1 (de) * 2008-08-29 2010-03-25 Robert Bosch Gmbh Vernietung von Zahnketten
ITPD20080298A1 (it) * 2008-10-21 2010-04-22 Fond Metalli Conveyors S R L Trasportatore a catena, particolarmente per semilavorati e prodotti in vetro e simili
WO2012022472A1 (de) * 2010-08-20 2012-02-23 Robert Bosch Gmbh Zahnkette, insbesondere antriebszahnkette
EP3318515A1 (de) * 2016-11-02 2018-05-09 Transmisiones Mecanicas AVE S.A. Förderbandmodul und förderband

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2045899A1 (de) 1970-09-17 1972-03-23 Heiz Stiels Konservenmaschinen Förderkette
AU1978776A (en) 1975-11-21 1978-05-25 Hilder L J Bar conveyor and pitch link therefore
US4159763A (en) 1977-08-02 1979-07-03 The Laitram Corporation Inspectable modular conveyor
US4220052A (en) 1979-05-25 1980-09-02 Rexnord Inc. Pin retention by interference fit differential
US5181601A (en) 1990-10-09 1993-01-26 Palmaer K V Plastic conveyor belt with integral sideplate
WO1993014010A1 (en) 1992-01-21 1993-07-22 Kelvin Taylor Robertson Improvements in or relating to conveyors
EP1043248A2 (de) 1999-03-18 2000-10-11 Fond-Metalli conveyors S.r.l. Kurvengängige verzahnte Förderkette, und Kettenelement
EP1241117A1 (de) 2001-03-14 2002-09-18 Pennine Industrial Equipment Limited Abschlussteil

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2045899A1 (de) 1970-09-17 1972-03-23 Heiz Stiels Konservenmaschinen Förderkette
AU1978776A (en) 1975-11-21 1978-05-25 Hilder L J Bar conveyor and pitch link therefore
US4159763A (en) 1977-08-02 1979-07-03 The Laitram Corporation Inspectable modular conveyor
US4220052A (en) 1979-05-25 1980-09-02 Rexnord Inc. Pin retention by interference fit differential
US5181601A (en) 1990-10-09 1993-01-26 Palmaer K V Plastic conveyor belt with integral sideplate
WO1993014010A1 (en) 1992-01-21 1993-07-22 Kelvin Taylor Robertson Improvements in or relating to conveyors
EP1043248A2 (de) 1999-03-18 2000-10-11 Fond-Metalli conveyors S.r.l. Kurvengängige verzahnte Förderkette, und Kettenelement
EP1241117A1 (de) 2001-03-14 2002-09-18 Pennine Industrial Equipment Limited Abschlussteil

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008044945A1 (de) * 2008-08-29 2010-03-25 Robert Bosch Gmbh Vernietung von Zahnketten
ITPD20080298A1 (it) * 2008-10-21 2010-04-22 Fond Metalli Conveyors S R L Trasportatore a catena, particolarmente per semilavorati e prodotti in vetro e simili
WO2012022472A1 (de) * 2010-08-20 2012-02-23 Robert Bosch Gmbh Zahnkette, insbesondere antriebszahnkette
EP3318515A1 (de) * 2016-11-02 2018-05-09 Transmisiones Mecanicas AVE S.A. Förderbandmodul und förderband

Also Published As

Publication number Publication date
EP1956267A3 (de) 2009-10-14
ITMI20070251A1 (it) 2008-08-13
RU2008105070A (ru) 2009-08-20

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